Tyler Boulter1, Michael D Christensen1, Jason D Jensen1, Mark Robinson1, Brian Zaugg1, Brian C Stagg1, Jeff H Pettey1, Ashlie Bernhisel1, William R Barlow1, Randall J Olson2. 1. From the College of Medicine (Boulter), Texas A & M University, College Station, Texas, and the Department of Ophthalmology and Visual Sciences (Christensen, Jensen, Robinson, Zaugg, Stagg, Pettey, Olson, Bernhisel, Barlow), John A. Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. 2. From the College of Medicine (Boulter), Texas A & M University, College Station, Texas, and the Department of Ophthalmology and Visual Sciences (Christensen, Jensen, Robinson, Zaugg, Stagg, Pettey, Olson, Bernhisel, Barlow), John A. Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. Electronic address: randallj.olson@hsc.utah.edu.
Abstract
PURPOSE: To assess the effect of varying levels of torsional power on phacoemulsification efficiency using an active-fluidics phacoemulsification platform with a 0.7 mm Sonata tip. SETTING: John A. Moran Eye Center Laboratories, University of Utah, Salt Lake City, Utah, USA. DESIGN: Experimental study. METHODS: A 0.7 mm tip was used to emulsify 2.0 mm porcine lenses that had been hardened in formalin. The torsional power was varied from 10% to 100% at intervals of 10%, and efficiency and chatter were recorded. A comparison of the 0.7 mm tip with the 0.9 mm Balanced tip was also performed. Using a torsional power setting of 90% and 100%, the 0.7 mm tip and the 0.9 mm tip efficiency times were recorded. RESULTS: The study showed an increase in efficiency as torsional power increased. The relationship was linear and more efficient up to 90% (R2 = .8025, P = .0005). Chatter was only observed at a torsional power setting of 60%. In addition, a head-to-head comparison of the 0.7 mm tip with the 0.9 mm tip showed that both tips were statistically similar in efficiency times, despite the smaller diameter of the 0.7 mm tip. CONCLUSIONS: The optimum torsional power setting with the Centurion platform in conjunction with the 0.7 mm tip was 90%. The efficiency of the 0.7 mm tip and the 0.9 mm tip was statistically similar.
PURPOSE: To assess the effect of varying levels of torsional power on phacoemulsification efficiency using an active-fluidics phacoemulsification platform with a 0.7 mm Sonata tip. SETTING: John A. Moran Eye Center Laboratories, University of Utah, Salt Lake City, Utah, USA. DESIGN: Experimental study. METHODS: A 0.7 mm tip was used to emulsify 2.0 mm porcine lenses that had been hardened in formalin. The torsional power was varied from 10% to 100% at intervals of 10%, and efficiency and chatter were recorded. A comparison of the 0.7 mm tip with the 0.9 mm Balanced tip was also performed. Using a torsional power setting of 90% and 100%, the 0.7 mm tip and the 0.9 mm tip efficiency times were recorded. RESULTS: The study showed an increase in efficiency as torsional power increased. The relationship was linear and more efficient up to 90% (R2 = .8025, P = .0005). Chatter was only observed at a torsional power setting of 60%. In addition, a head-to-head comparison of the 0.7 mm tip with the 0.9 mm tip showed that both tips were statistically similar in efficiency times, despite the smaller diameter of the 0.7 mm tip. CONCLUSIONS: The optimum torsional power setting with the Centurion platform in conjunction with the 0.7 mm tip was 90%. The efficiency of the 0.7 mm tip and the 0.9 mm tip was statistically similar.
Authors: Rhett S Thomson; Brian A Bird; Lance A Stutz; Joshua B Heczko; Ashlie A Bernhisel; William R Barlow; Brian Zaugg; Randall J Olson; Jeff H Pettey Journal: Clin Ophthalmol Date: 2019-04-12
Authors: John S Peterson; Michael R Christensen; Caitlynn Cooper; Christina Mamalis; Ashlie A Bernhisel; Brian Zaugg; William R Barlow; Emilie Ungricht; Randall J Olson; Jeff H Pettey Journal: Clin Ophthalmol Date: 2022-04-08